Pipeline scraper for dissipation of inhibitors with vortex effect. RU patent 2509613.
 Device to apply roll insulation material onto manifold pipeline / 2502010Device comprises a detachable rotor of circular cross section in the form of a squirrel cage with support rollers and double-sided fixed bobbins for fixation of roll insulation materials. Also it comprises an autonomously placed detachable unit of a drive equipped with support and cylindrical traction rollers, on which a mechanised drive is placed with a master sprocket. On one of rotor ends there are rigidly fixed sectors of sprockets that are evenly arranged or sprockets covered with a driving chain, which also covers the master sprocket of the mechanised drive. To synchronise axial displacement of the rotor and the unit of the drive, the end external ring of the rotor at the side of the drive is arranged between cylindrical traction rollers of the drive unit. |
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Pipeline multilayer insulation coating / 2498148 Coating consists of a basic polymer layer, a mastic layer containing bitumen, thermoelastoplast and glue AS-M and a ground coat with the latter being made of the mastic layer material additionally containing glue AS-M and oil-soluble corrosion inhibitor IKB-2-2. Coating composition has the following ratio of components, wt %: Mastic layer: bitumen - 81-85, thermoelastoplast - 9-11, glue AS-M - 4-9; ground coat: bitumen - 22-23, thermoelastoplast - 2-3, glue AS-M - 8-10; petroleum solvent - 64-65, oil-soluble corrosion inhibitor IKB-2-2 - 0.7-1.0. |
 Method for application of protective coating to inner and outer surface of pipes and device for its implementation / 2498040Method for application of protective coating to inner and outer surface of pipes includes running-in of device for application of the coating into a pipe string, melting of coating and its application to pipe walls. Protective coating is applied to outer surface of couplings, up to three couplings, by means of device for application of the coating to outer surface. Protective coating is applied to outer surface of couplings is applied during running-in into pipe string. Application of protective coating to inner surface of several tubing strings is made at ground level by the device for application of the coating to inner surface. Then coating is straightened by a calibrating unit. The device for application of protective coating to inner surface of pipes includes container for melted compound, heating elements, piston and calibrating unit. The calibrating unit is flexible and there are springs inside it. Springs allows changing outer diameter of the calibrating unit when pipe diameter changes. Pressure sensors, temperature sensors, spotlights and web-cameras are installed at the device in order to control process of coating application. |
 Method of applying insulating gasket on pipe joint / 2488737Method is realised by applying a heat shrink multilayer adhesive tape, having a protective layer made from polyethylene tape, electron-chemically modified and aligned in the common direction by 25-75%, and an adhesive layer made from a tape which is electron-chemically modified with accelerated ions with absorbed dose of 0.1 MGy, made from a composition which contains an ethylene and vinyl acetate copolymer with content of vinyl acetate groups of 10-14%, melt fluidity of 5.0-10.0 g/10 min and breaking strength of 9.8 MPa or an ethylene and vinyl acetate copolymer with content of vinyl acetate groups of 10-15%, melt fluidity of 2.0-6.0 g/10 min and breaking strength of 9.0 MPa, mineral filler, modifier - polyisocyante and sulphur-containing polyhydroquinone disulphide stabiliser in concentration of 0.1-0.3 wt %. |
 Heat shrink gasket and method of making said gasket / 2488736Method of making heat shrink tape for a gasket from polyethylene and an ethylene and vinyl acetate copolymer by mixing polyethylene and an ethylene and vinyl acetate copolymer with a sulphur-containing polyhydroquinone disulphide stabiliser with concentration of 0.1-0.3 wt %, irradiating the obtained tape with accelerated electrons with absorbed dose of 0.07-0.1 MGy and subsequent duplication at temperature of 145-150°C. The heat shrink tape is stretched by 15-70% at temperature of 140-150°C and cooled under a load to room temperature. |
 Tubing string / 2487229Invention is referred to tubing string having silicate enamel coating at inner surface. At outer surface of the string ends there is a tool for tubes connection made as threaded sections. At that according to the invention silicate enamel coating at inner surface of tubes is modelled at substrate. Substrate is formed with area having removed layer of metal surface with depth from 60 mcm up to 80 mcm. At that substrate length exceeds length of threaded section at outer surface of the tube 2.1-2.3 times. |
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External polyurethane two-component protective coating (versions) / 2481367 Invention relates to pipeline construction and is used in field and basic conditions when laying underground main pipelines for protection thereof from corrosion, mechanical damage and during construction of gas or liquid transporting field and industrial pipelines in conditions of permanently frozen soil, when laying pipelines on swamps, on waterlogged areas, particularly for repairing anti-corrosion coatings of oil pipelines, oil product pipeline and gas pipelines during repair thereof in field conditions, including without stopping transportation of the product, and during corrosion protection of piping of compressor stations at pipeline temperature of 70-90°C, on a section of a pipeline transporting gas at temperature above zero after a compressor station, e.g. at a section of a discharge line transporting compressed gas at temperature of plus 40°C. Versions of anti-corrosion paint for obtaining an external polyurethane two-component protective coating are given. The paint is obtained by mixing component A and component B - polyisocyanate based on diphenyl methane diisocyanate with equivalent mass of 131-135. Component A is a suspension of substances in a hydroxyl-containing polyatomic alcohol with ether and ester bonds with equivalent mass of 230….250. |
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Method to repair pipeline, complex of equipment for realisation of method and its devices / 2462653 Method to repair pipes dismantled in process of pipeline repair and accepted suitable for repeated use, is carried out on a route under basic conditions using a complex of equipment for repair of pipes, in connected mobile modules of which pipes are cleaned from old insulation, the external surface of the pipes is prepared for application of a coating, the external surface of the pipes is insulated by application of a protective coating, while heating the external surface of pipes to speed up the process of protective coating polymerisation. Pipes are moved to the place of storage, at the same time works are carried out in a general flow, for this purpose each pipe is based on two trolleys. Depending on the nature of technological operations, each pipe is given a rotary movement using reciprocal motion of trolleys along a rail track, besides, ends of pipes at the length of at least 150 mm are protected against application of a coating. |
 Method of repair of pipeline with insulation coating / 2460930Proposed method comprises contactless unearthing, removing damaged coating, pipe surface processing, applying new coating and burying repaired pipeline. Pipeline separate equal-length sections are unearthed while all process job time intervals are equal. Said removing damaged coating, pipe surface processing, and applying new coating are executed without contact between process equipment and pipeline surface and spark-forming mechanical contact of work tools. |
 Procedure for application of coating on internal surface of pipeline / 2437024Before insertion of sleeve inside pipe bandage of fibrous material is fixed on internal surface of pipe by means of metal band impregnated with solidificated binding. There is formed an open circular section of the bandage. A tube-like sleeve of fibrous material is inserted inside the pipe. The sleeve is impregnated with solidificated binding and is enclosed into a flexible casing of polymer material. Further, the sleeve is reversed and moved inside the pipe, is straightened and pressed to internal surface of the pipe due to pressure of water on internal surface of an inverted sleeve. The bandage is solidificated simultaneously with the sleeve. |
 Pipeline inner surface cleaner / 2434693Invention relates to operation to main pipelines and serves to clean their inner surface. It may be used in oil and gas industry. Elastic collars of cleaner feature zigzag-like shape and are furnished with structural cord carcass with its threads arranged radially. Inner diameter of collar sealing element is coupled with fastening section edges by spring elements made up of radial sectors arranged regularly. Elastic material of radial sectors is identical with that of collar. Spring elements are interconnected by stiffness ribs to make a circle. |
 Cleaning piston with improved effect of packing / 2432519Invention refers to cleaning piston for transfer of working medium inside of supplying pipeline with case (12) of cleaning piston (5). The piston is actuated into motion inside the supplying pipeline with moving medium. On end side (18) it has lug (34) with free end surface (36). Additionally, the cleaning piston has at least one first and one second elements located on case (12) of the cleaning piston enveloped with packing elements. Elements (38, 44) of elastomer material are positioned in the direction of lengthwise axis (14) of case (12) of the cleaning piston at a distance from each other and they pass coaxially to lengthwise axis (14) of case (12) of the cleaning piston. Packing elements (38, 44) are pressed to an internal wall of the supplying pipeline because working medium 15 or moving medium applies force to working surface (22, 32, 30, 24, 42, 72) of corresponding packing element (38, 44). Working surface (22, 32, 30) of packing element (38) adjacent with end surface (18) with lug (34) is less, than working surface (24, 42, 72) of another packing element (44). |
 Cleaning brush / 2429087Cleaning brush consists of case filling cross section of pipe by means of at least two collars positioned at distance from each other in lengthwise direction. The case moves forward in a specified direction together with fluid medium transported through a pipeline. The brush has at least one delivery orifice located on a back side. Through a pressure line the orifice leads to a draining orifice coming out in an interval between the collars and directed onto an internal wall of the pipeline. |
 Method of removing flesh from pipeline weld seam inner surface and flesh trimmer / 2426611Flesh is removed by annular cutting tool forced inside pipeline by air or fluid pressure. Flesh trimmer comprises casing with cutting head and support rolls and differs from known designs in that trimmer piston consists of head and tail parts coupled to turn relative to each other in three dimensions. Tail section comprises hollow case with cleaning and supporting disk fitted thereon and separated by spacing elements. Head section consists of casing with cutting heads made up of pyramid-like mandrels with inner cutting surface arranged between two disk supports. Piston differs from known designs in that mandrel surface is provided with cutting edges directed toward pyramid base. Two mandrel sections are used. Said mandrels in one disk are shifted relative to those in another disk. |
 Piston to clean pipeline inner surface / 2414310Invention relates to operation of pipeline systems, particularly, to cleaning pipeline inner surface and may be used for cleaning pipeline inner space of bitumen-gummy deposition. Piston made from elastic synthetic material represents a cast hollow cylinder with head. Cylinder outer surface has one or several annular stepped ledges. Through holes are made ahead of said ledges to penetrate into piston inner space, the number and sizes of said holes being subject to pipeline diametre. Given more than one ledges on cylinder surface, ledge diametre increases from cylinder head to face. Note here that the last ledge or several ledges from cylinder head feature diametre equal to or exceeding pipeline ID. |
 Device to clean pipeline inner space / 2408441Invention relates to pipeline transport and is intended for cleaning mains pipeline inner surface of accumulated asphalt-pitchy and mud-paraffin deposits and construction refuse. Proposed device comprises two or more sets of elastic sleeve gaskets between which a number of separating elements are arranged and electromagnetic transmitted is connected to signal about device location. Said elastic sleeve gaskets are fitted on transmitter housing. |
 Method of in-pipe displacement of transport tool in main pipeline with preset variable speed and device to this end / 2393931Invention relates to construction and operation of main pipelines, namely to control and diagnosis of their state. Proposed method comprises feeding preset pressure and flow rate gas or air flow from outside source to tool, generating pressure differential thereon, displacing tool by said pressure differential, adjusting braking speed at flow acceleration via conversion of excess flow power into mechanical power with its accumulation or into thermal power with its subsequent use, or, at flow deceleration, via restraint of speed drop by creating additional tool driving force due to using accumulated mechanical energy. Working medium pressure and flow rate is preliminary calculated and set depending upon terrain relief. Proposed device comprises unidirectional scraper consisting of casing with sealing collar made from elastomer, speed adjusting device furnished with braking appliance, pneumatic cylinder communicated via pipeline with compressed gas source, working medium or natural gas source that can maintain constant preset pressure and flow rate of working medium flow fed into pipeline section, plugged on one side and open on the other one. In-pipe transport tool comprises scraper, casing with adapted collar and coupling appliances. Speed adjusting device comprises at least three rubber-bonded wheels making aforesaid braking appliance, pressed against pipeline surface by spring mechanism and inter-articulated via flexible coupling, angular conical booster and gimbal joint with multispeed booster arranged in scraper casing to drive two coaxial hollow cylindrical opposite-direction flywheels with equal kinetic moments. Said multispeed booster is articulated with flywheels of friction conical sleeve with magnetic lock. Multispeed booster kinematic train start accommodates braking assembly with heat recovery unit driven by said train. Said heat recovery unit is controlled by centrifugal speed regulator. Note here that, apart from pneumatic cylinder making braking appliance actuator, said speed adjusting device comprises second pneumatic cylinder actuating friction conical sleeve driven by working medium pressure. |
 Hydraulic monitor reversible for cleaning of pressure pipelines / 2379132Hydraulic monitor contains two half-spheric collars, consisting of reeds, located in two layers in staggered order and forming tapered groove, accelerating working substance grooves, axial branch, on which there are located collars, and cavitator. Collars on branch are directed opposite to each other by inner surfaces, and its plates are connected so that tapered groove of one collar is proceeding of groove of other collar. Collars form one-piece symmetrical body of revolution, ehich back and front parts are stream forming and providing workability of device at direct and reverse trace in pipeline at changing of feeding direction of working agent. Invention works either at direct or at reverse trace. That provides extraction of jammed monitor from pipe, applying to it reverse trace. It is especially important at cleaning of pipelines - sag pipes, passing under river, mountain, lake etc. |
 Method of in-line transport of pig in main pipeline with preset uniform speed and device to this end / 2369454Proposed method includes feeding air or gas flow from outer source to the pig, forcing the pig forward and generating braking force depending upon terrain relief. Pig speed is controlled and, if required, corrected by varying braking force produced by transforming a portion of flow power in hydraulic and electric power. Proposed device comprises sealing sleeve gasket made from elastomer, speed control device and air source, for example turbo compressor or a natural gas source that can regulate pressure of medium forced into the pipeline and communicate with plugged section of pipeline to be tested. In-line pig comprises coupling device, front and rear centering wheels with spring mechanisms and hydraulic drives that press aforesaid wheels against pipe inner surface. It comprises also hydraulic system consisting of hydraulic tank, accumulator bottles, hydraulic pump with chain drive, heat exchanger, hydraulic system control hardware, hydraulic cylinders to press shoes against pipe inner surface and speed control device. Note here that the device additionally comprises microprocessor to control the pig via electric system consisting of electric generator driven via chain gear from the rear centering wheel, storage battery, control unit and speed and pressure pickups. |
 Device to clean pipe inner surface / 2369453Proposed device comprises at least two consecutively banked assemblies each including at least two elastic sealing plate-type cups, separated by sleeves, and ring-like elastic porous cups fitted onto sleeves. Aforesaid rings feature diametre larger than that of plate-type cups. There is a transmitter of electromagnetic signals on the device location arranged between aforesaid assemblies. Elastic porous cup is fitted onto the said transmitter, the cup diametre mating that of elastic porous cups. Transmitter axle passes through banked assemblies and is attached thereto via special attachments. |
 Device for application of liquid composite on cylindrical article inner surface / 2497600Device for application of fluid on inner surface of cylindrical articles may be used in various industries for making coatings on cylinder inner surface. Proposed device comprises feed union with cover, elastic limiting element fixed thereat and gage element spring loaded relative to feed union by rod and nut. Nut is secured with said rod by thread. Pins are fixed at nut edges. Feed union body has holes to receive free ends of the studs. Gage element is furnished with blind holes. High-pressure tube is communicated with feed union inner space to feed fluid to said device. |
FIELD: process engineering.
SUBSTANCE: invention relates to pipeline transportation. Pipeline scraper (in-pipe inspection piston) is driven in pipeline by compressed air flow and serves to distribute cleaning solution accumulated at pipeline bottom. Front end of pipeline scraper (in-pipe inspection piston) has atomiser elongated in lengthwise direction and furnished with the set of helical cutouts arranged at atomiser outlet side periphery. Said scraper is equipped with two perforated seal elements making the resonator that serves as low-pressure space. Cutouts create vortex effect while perforated seals make steam and solution opposite pipeline scraper (in-pipe inspection piston) be sucked into resonator and be released via holes back to atomiser outlet.
EFFECT: cleaning solution accumulated at pipeline bottom is dissipated so that a complete 360 degrees coverage of pipeline inner cylindrical wall.
21 cl, 7 dwg
This invention is entirely related to pipeline Skrepka (inspection pistons, which are used in pipelines and move inside of the pipeline through the flow of compressed gas. More specifically, the present invention relates to pipeline Skrepka (inspection pistons), which provide the most optimal distribution solutions for cleaning of pipelines, such as inhibitors and cleaning chemicals, gathering in the lower part of the pipeline.
The described invention is a pipeline scraper (inspection piston), which lies in the basis of application method of purification of the solution of type inhibitor or cleaning chemical inside pipes in special longitudinal and peripheral areas along the internal the walls of the pipeline, particularly on the upper sections of the internal wall of the pipeline. Pipelines, especially those that are designed to move large quantities of gas under pressure, usually made of metal, usually steel. Steel is a metal, which is preferred for construction of pipelines due to inherent in this metal, durability, availability and economy. However, steel corrosion as a result of oxidation and entry into reactions with gases and liquids, such as water, which usually happens when large volumes of gas through the pipeline.
To counteract corrosion many operators of pipelines use standard technology, which is to periodically enter inhibitor solution inside a pipeline. This solution can move through the gas flow inside the pipeline or, as is more common, due to the use of pipeline scrapers (inspection piston), inserted in the pipeline and roaming gas stream. Pipeline scraper (inspection piston) to ensure the piston motion inside a pipeline that leads to push in front of a solution in the pipeline and thus moves the solution along the entire length of the pipeline. One applying method of purification of the solution to the inner part of the pipeline is called "dosing, packaging, when cleaning solution is going between the two pipeline scrapers (inspection pistons), which move in tandem.
The second method of cleaning the internal cylindrical surface of the pipeline is called "the method of injection". When using this method, the cleaning solution is injected directly into the pipeline and moves through a gas stream that causes the promotion of the solution along the entire length of the pipeline. This is a rather expensive method; in this case requires treatment solution was injected into the pipeline more or less constantly. In this method, there is no direct application of cleaning solution on the inner wall, the solution is simply condensed and going to the bottom inside of the pipeline.
The third method of cleaning the internal cylindrical surface of the pipeline is called "the method of dispersion", and this method is described in my U.S. patent # 6,874,193. Under this method pipeline scraper (inspection piston) placed in the pipeline, where there is a cleaning solution, and pipeline scraper (inspection piston) moves through the gas flow through the pipeline. Pipeline scraper (inspection piston) has such a form that allows you to move the solution ahead pipeline scrapers (inspection piston), so that the solution was moved from one partition to another on the inside of the pipeline. As the pipeline scraper (inspection piston) simultaneously pushes before a solution along the length of the pipeline, some part of the compressed gas from the rear end of the pipeline scrapers (inspection piston) passes through the back entrance hole through the inner surface body and out through the bypass channel. Rear entry hole mainly located in the area of the inner upper part of the pipeline. The gas flow around siphon overflow channel and moves the solution inside the bottom of the inner section of the pipeline in the inlet end of the siphon overflow channel. The creation of reduced pressure on the outside (external) siphon overflow channel leads to the conclusion that the solution of this siphon overflow channel and to move this solution together with gas so that there is a solution, and this stream is released from the hole nozzles so as to cover the upper segment of the internal cylindrical wall of the pipeline.
The shortcomings of the current method of dispersion are: (1) a large amount of bypass gas or solution cannot pass through the body pipeline scrapers (inspection piston) or the distributor; (2) the discharge rate and the effect of mixing limited the pressure drops; (3) requires a large number of injectors in order to ensure the application close the top cover. Thus, there is a need in equipment for dispersion, which would allow to get rid of these shortcomings and provide improved dispersion and the effect of the coverage of higher quality.
According to this invention pipeline scraper (inspection piston moves inside of the pipeline through the flow of compressed gas and provides a better allocation of water treatment solutions, such as inhibitors or cleaning chemicals on the internal surface of the pipeline. Pipeline scraper (inspection piston) has a longitudinal case with the nozzle, which is located at the front end of the pipeline scrapers (inspection piston), having a conic form a Central hole and with at least three external peripheral (ring) sealing elements, located on the pipeline skripke. In a preferred embodiment, the embodiment of the present invention of the first sealing element is a bowl, and he perforated in at least two locations to provide a bypass channel for solution that collects in the bottom quarter of the circumference of the pipe and pipeline before scraper (inspection piston), and to provide a bypass channel for steam accumulating in the top quarter of the circumference of the pipe and pipeline before scraper (in-line inspection piston). The second and third sealing elements are in the form of radial disk, and the second sealing element perforated in at least two locations to provide a bypass channel for the solution and the pair held by perforated first sealing element.
Inside the nozzle is longitudinally extended wedge (cone) a resonator, which, together with pipeline scraper (inspection piston) occupies a Central space. Atomizer has diffuser and peripheral set of holes located along the sides of the cone nozzles. A set of holes associated with internal segment nozzles and with resonator, external to the body for pipeline scrapers (inspection piston)that serves as a space with low pressure. The resonator is limited by the external surface of the pipeline scrapers (inspection piston), the internal surface of the pipeline and opposite surfaces of the second and third sealing element. In a preferred embodiment, the embodiment of the present invention a set of holes is located just in front of the discharge side of the injector. In another preferred embodiment, the embodiment of the present invention a set of holes is located just at the back of the exhaust side nozzles. In another preferred embodiment only the first sealing element perforated and resonator, which serves as a space of low pressure is between the first sealing element and the second sealing element.
All of the atomizer can continue to include many of the slots, is located in front of the exhaust side of the resonator nozzle and located peripheral, that it is preferable creates a spiral form. Spiral form created by the cuts, increasing the graduation rate and the effect of mixing nozzle, creating a vortex effect. The effect of Bernoulli high speed product passage of the pipeline through the diffuser creates low pressure in the set of holes that becomes apparent in the resonator. Perforated first and the second sealing elements allow the vapor and solution before pipeline scraper (inspection piston) moved into the cavity through the holes and back to the issue of the nozzle. The solution thus, accumulated in the lower part of the pipeline, moved into pairs, scatters through the jet in order to ensure full coverage 360° internal cylindrical wall of the pipeline.
A better understanding of the invention may be obtained from the following detailed description of the preferred embodiments together with the drawings and the attached claim.
Preferred embodiment will be now described in more detail. Other characteristics, aspects and advantages of the present invention will become more understandable based on the following detailed description attached claims and accompanying drawings, which are made not in scale, where:
Figure 3 is a type of cross section of the pipeline scrapers (inspection piston) pipeline, which has a set of holes located on the periphery around the nozzle with spiral grooves and in the front part of the diffuser, and have only perforated sealing element and the space of low pressure.
Figure 4 is a type of pipeline scrapers (inspection piston) pipeline figure 3, taken along section line 4-4.
Figure 5 - kind cross section of pipeline scrapers (inspection piston) pipeline, which has a set of holes located on the periphery around two-nozzles and placed in the front part of the diffuser, and having a set of perforated sealing elements and space low pressure.
6 is a kind of pipeline scrapers (inspection piston) pipeline figure 5, taken along section line 6-6.
Fig.7 is a type of cross section of the pipeline scrapers (inspection piston) pipeline with 5 single-nozzle with spiral grooves.
It should be understood that the invention, which is now described, is not limited in its application to components of the structure and location of components that are illustrated in the attached drawings. Other embodiments of the present invention, and it can practically use or apply a variety of ways. Used here terminology and phraseology is for descriptive purposes and in no way is a limitation.
Referring to the drawings, we can say that the figures 1 and 2 illustrate the pipeline scraper (inspection piston) pipe with longitudinal cylindrical enclosure 12, preferably made of flexible urethane - located inside a pipeline R. The building has 12 front end of the 14th and the rear end of 16. On the back end 16 is back bowl 18 and, similarly, the front end is located 14 front bowl 20. Bowl 18 and 20 preferably made of elastomer materials: usually bowls pipeline scrapers (inspection piston) pipeline is used urethane. Rear Cup has 18 peripheral cotyloid cavity 22 in the back surface, which provides a flexible peripheral plot edges 24 in sealing the connection with the internal cylindrical surface of the pipeline R. Front Cup 20 is designed similarly to the back of the bowl 18 and has a bowl-shaped cavity 26. Cotyloid cavity provides flexible peripheral plot of 28 edge that extends outwards from the power of the gas stream, which occupies the inner part of the pipeline R. Sealing grip bowls 18 and 20 moves pipeline scrapers (inspection piston) by liquid flow through the pipeline R.
Set radial butterfly valves 30 a-d is located between the front Cup 20 and rear Cup of 18. The number of radial butterfly valves 30 may vary depending on the requirements of the maintenance of the pipeline; preferably they are made of hard elastomer material. Each radial disk shutter 30 has an external peripheral edge of 32, which is in contact with the outer wall of the pipeline R. This clutch ensures action scraper with a rubber attachment that moves any liquid in the pipeline P, along pipeline with scraper (in-line inspection piston), as the pipeline scraper (inspection piston) moves through the pipeline P at the expense of the gas stream.
Jet 40 with the front end 42 and rear end 44 attached to the front of the case for pipeline scrapers (inspection of the piston). Preferably, jet 40 was formed from a hard material. Having a conic outlet bypass 46 is located inside the nozzle 40 and centerline 90 corps pipeline scrapers (inspection piston) 12. The bypass channel 46 narrows in diameter towards the top or the nozzle 54 so that the diameter of bypass channel 46 on the front end 42 becomes considerably more than nozzle 54. The bypass channel 46 may, in addition, include a set of slots 58, preferably with a spiral form. To attach the nozzle 40 to the body pipeline scrapers (inspection piston) 12, jet 40 has reduced in the center of the cylindrical section 48, which adopted the front end of the 14th corps pipeline scrapers (inspection piston) 12. Many of teeth, Burr 70A, 70 V, located on the outer surface of the nozzle 40, grasp the inner surface of the case for pipeline scrapers (inspection piston) 12 and hold the nozzle 40 on the spot. Radially extended area of the nozzle 40 serves as bumper to center, to localize and to keep in place the nozzle 40.
Having a conic inlet 50 is located on the rear end 44 nozzles 40, and this inlet gradually narrowed to the exhaust nozzle 54 and diffuser 56. Inlet 50, discharge nozzle 54 and diffuser are 56 peripheral centerline 90. Spiral slots 58, located at the front of the exhaust nozzles 54, can be used to create a vortex effect working to improve the graduation rate and the effect of mixing nozzles 40. The number, shape and angle of the exhaust nozzles 54 depend on the application.
A set of holes 62, 64 is peripheral to the body pipeline scrapers (inspection piston) 12 and the jet 40, respectively. A set of holes 62 and 64 interact with each other through the peripheral space 68 generated by the recess in the nozzle is 40, which serves as a space of low pressure inside the shell pipeline scrapers (inspection piston) 12. Holes 62, 64, who are primarily located at equal distance bypass channels, provide an area of low pressure in the space of 68, which creates a cone 56 as a bypass gas passes through the exhaust nozzle 54. The number, size and configuration of the bypass channels in each set of holes 62, 64 will largely depend on the pressure and flow in the pipeline. In one of the preferred embodiments of the bypass channel holes 64 is located just ahead of the exhaust nozzles 54, it forms an angle in the rear and center line 90. The bypass channel holes 64 then traverses the space 68.
As the front bowl 20 and radial disk shutter 30A perforated and are the same distance from each other, as shown in figure 1, 5, and 7. The size and number of perforations 34, 36 on the front of the bowl 20 and radial disk shutter 30A, respectively, are determined by such factors as the size, pressure pipelines and availability flow. In addition, you can use other configuration pipeline scrapers (inspection piston) 10, for example, pipeline scraper (inspection piston) 10 with a multi-jet. Whatever, depending on your configuration pipeline scrapers (inspection piston), the relative position of the holes, bypass channels and cavities will remain the same as those described here location.
The effect of Bernoulli high speed product pipeline that passes through the diffuser 56, creates a low pressure in the set of holes 64, which propagates in space 68 through the bypass channel holes 62 and resonators 80 and 82. Front Cup 20 and radial disk shutter 30A allow pair V and chestnomu solution L opposite pipeline scrapers (inspection piston) to stalkivalsa in resonators 80 and 82 through the holes 62 and back to the discharge side of the diffuser 56. Thus cleaning solution L deposited in the lower part of the pipeline P, scatters thus, to ensure the application of full 360 degree coverage on internal cylindrical wall of the pipeline R. Front bowl 20 and radial disk shutter 30A can also be perforated (that is, perforation 34, 36) sawtooth (not shown) along the outer section to their relatively peripheral edges, but this type of perforation does not provide the best level of control over the vacuum in the area of space low pressure, resonators 80 and 82 how this is achieved in the case of more accurate Swersey on the size of the perforation Figure 2.
3 and 4 illustrate another incarnation of pipeline scrapers (inspection piston) 10. In this incarnation, only the front Cup 20 perforated. The bypass channel holes 64 passes under an angle from the horizontal line 90, as it does with a by-pass channel 62. The bypass channel holes 64 and the bypass channel holes 62 have common axial line and pass the low pressure created by the diffuser 56, to the resonator 80. The resonator 80 serves as a space of low pressure.
While this invention is described in some detail, you can make many changes in the details of the construction and the location of the components, not away from the essence and purpose of this invention. It is understood that the invention is not limited lifetimes, are considered as examples, but it should be limited only by the scope of the enclosed claims, including a full range of patent that applies to each element of this invention.
1. Pipeline scratcher scattering of a solution on the internal surface of the pipeline, including: a longitudinal case of pipeline scrapers, with the nozzle in the front edge of the scraper, three or more external peripheral sealing elements and peripheral set of holes; - specified burner cone center hole and cone with common longitudinal axial line with the specified body pipeline scrapers; - mentioned first and the second sealing elements, each of which is located behind the front section of the specified nozzle and perforated to ensure that two or more bypass channels; - said first-pass channel, which communicated with the upper quarter of the circumference of the pipe, and specified the second bypass channel, which is connected with the lower inner quarter of the circumference of the pipeline; and the specified set of holes, which are connected with inner plot specified nozzle and space low pressure.
2. Pipeline scraper according to claim 1, where space low pressure is limited by the external surface of the specified shell pipeline scrapers (inspection piston), the internal surface of the pipeline and opposite surfaces specified the second and third elements.
3. Pipeline scraper according to claim 1, covering the peripheral space located between the specified inner surface of the specified pipeline scrapers and the outer surface of the specified nozzle, with the specified peripheral space is connected with the specified space low pressure.
4. Pipeline scraper according to claim 1, where the specified set of holes includes two or more substantially equidistant relief channels.
5. Pipeline scraper according to claim 1, where the plot is at least one hole in the specified set of holes located in front of the specified diffuser.
6. Pipeline scraper according to claim 1, where the plot is at least one hole in the specified set of holes located at the rear of the specified diffuser.
7. Pipeline scraper according to claim 1, where the plot is at least one hole in the specified set of holes oriented perpendicular to the centre line of the specified nozzle.
8. Pipeline scraper according to claim 1, where the plot is at least one hole in the specified set of holes oriented at an acute angle to the centreline of the specified nozzle and is at an angle to the centreline of the rear in relation to the specified nozzle.
9. Pipeline scraper according to claim 1, where the plot is at least one hole in the specified set of holes oriented at an obtuse angle to the centreline of the specified nozzle and is at an angle towards the centerline, and from the rear in relation to the specified nozzle.
10. Pipeline scraper according to claim 1, where this nozzle moreover includes many slots that are placed peripheral centerline axis specified nozzle.
11. Pipeline scraper in paragraph 10, where the area specified many of the cuts is located in front of the inlet side of the specified nozzle.
12. Pipeline scraper in paragraph 10, where the aforementioned many slots has a spiral shape.
13. Pipeline scraper according to claim 1, where at least one designated the first and the second sealing elements perforated through the inner surface.
14. Pipeline scraper according to claim 1, where at least one designated the first and the second sealing elements perforated along peripheral edge.
15. Pipeline scraper according to claim 1, where specified sealing element perforated specified space low pressure limited external the surface of the specified shell pipeline scrapers, the internal surface of the pipeline, opposite surfaces specified first and the second sealing elements.
16. Pipeline scraper according to claim 1, where this nozzle enables moreover liner conical shape.
17. Pipeline scraper according to claim 1, where this nozzle enables moreover, one or more inner resonator, and specified the resonator is in connection with the specified space of low pressure.
18. The allocation method of purification of the solution, gathering in the lower part of the pipeline internal surface of the pipeline, consists of the following stages: - the passage of the pipeline pipeline scrapers (inspection piston)with diffuser and set holes located relatively peripheral cone and the cone is activated due to the flow of compressed gas in the pipeline; - the formation of low pressure between two external peripheral sealing elements, located on the pipeline Skrepka (inspection of the piston); and at least one sealing element perforated on the inner surface; - transmission of cleaning solution from the bottom of the inner section of the pipeline and a pair of top internal section of the pipeline through the perforated sealing element for admission into the space of low pressure, as well as through a set of holes; - distribution of cleaning solution through the outlet diffuser on the internal surface of the pipeline.
19. The method according to p where the pipeline scraper has at least one sealing element, perforated for peripheral edge sealing element.
20. The method according to p where the pipeline scraper has a set of slots located relatively peripheral centerline.
21. The method according to claim 20, where we are talking about a set of spiral grooves.